It was listed on the National Register of Historic Places in 1990. The stamp was issued on Saturday, July 13, 2013.

It is the nation's fifth oldest light station and the seventh oldest U.S. lighthouse. Station established: 1761 It is currently owned and maintained by the New London Maritime Society as part of the National Historic Lighthouse Preservation Act program. In 1761, thousands of lottery tickets were sold to help pay for an early stone tower with a wooden lantern at the harbor entrance (this was a popular method of raising funds for construction projects in those days). The town of New London, founded in 1646, was important for its strategic location at the mouth of the Thames River and was considered the best deep water harbor on Long Island Sound. It is both the oldest and the tallest lighthouse in Connecticut and on Long Island Sound, with its tower reaching 90 feet. According to the USCG, for the top of New London Harbor Light, one can see more lighthouses than from any other place on earth. It is currently own
The light is visible for 15 miles and consists of three seconds of white light every six seconds. Hotels near New London Harbor Light: (4.59 mi) Inn at Harbor Hill Marina (8.19 mi) The Old Mystic Inn (6.87 mi) Steamboat Inn (7.15 mi) Mermaid Inn of Mystic (8.54 mi) Stonecroft Country Inn; View all hotels near New London Harbor Light on Tripadvisor The lighthouse made it through the American Revolution unscathed, helping to guide American privateers into New London Harbor. New London Harbor Lighthouse is the fourth oldest lighthouse in the country and one of the earliest American lighthouses with a flashing light. New London's Harbor Light was the featured lighthouse for Connecticut in the 2013 United States Postal Service's New England Coastal Lighthouses series. New London Harbor Light was the fourth lighthouse in North America and the first on Long Island Sound. Accessibility: Check with the New London Maritime Society for the latest tour status. USPS made a great film. History of the New London Harbor Lighthouse. New London Ledge Lighthouse is a lighthouse in Groton, Connecticut on the Thames River at the mouth of New London harbor. New London Harbor Light is a lighthouse in Connecticut on the west side of the New London harbor entrance. New London, Connecticut is a veritable paradise for lighthouse lovers. From the top of the lighthouse, it is possible to see at least seven other lighthouses: New London Ledge, Race Rock, Little Gull Island, Plum Island, Little Dumpling, Montauk, and … Active aid to navigation.
A tax on local shipping helped pay for the upkeep of the tower. The keeper's house is privately owned. The lighthouse tower is owned and managed by: New London Maritime Society. Posted/Updated by Bryan Penberthy on 2012-08-11..